<?php
if ($this->Feature != null) {
    echo $this->formSelect('FeatureId', null, array('size' => 10, 'class' => 'FeatureId'), $this->Feature);    
}else{
    echo $Feature = $this->formSelect('FeatureId', null, array('class' => 'FeatureId'), array('Chọn danh mục thuộc tính'));
}
?>